Question

Your team must always deploy EC2 instances using the most recent official Ubuntu AMI, which changes frequently. You do not manage the AMI itself with Terraform, but you need its ID available in your configuration so the aws_instance resource can reference it. Which HCL construct should you use to obtain the AMI ID?

Accepted Answer

A data source (data "aws_ami") that filters for the latest matching image, referenced by the instance's ami argument

Answer

A resource block (resource "aws_ami") to create the AMI and pass its id to the instance

Answer

An input variable with a default set to the current AMI ID, updated manually before each apply

Answer

A local value that hardcodes the AMI ID string for reuse across resources